Understanding the Star Winding in 6-12 Volt Generators

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SUMMARY

The discussion focuses on the star winding configuration in older 6-12 volt generators, specifically regarding the rewinding process and the electrical connections involved. Participants emphasize the importance of understanding back EMF (Electromotive Force) and its role in limiting current despite low resistance in the armature coils. The conversation highlights the need for clarity on how many wire ends connect to the commutator sections and whether the windings are linked at a neutral point. This information is crucial for anyone attempting to repair or modify these generators.

PREREQUISITES
  • Understanding of electric motor components, specifically armature and commutator.
  • Familiarity with back EMF and its impact on current flow.
  • Basic knowledge of winding techniques for electric motors.
  • Experience with soldering electrical connections.
NEXT STEPS
  • Research the process of rewinding electric motor armatures.
  • Learn about the principles of back EMF in electric motors.
  • Explore the differences between star and delta winding configurations.
  • Investigate soldering techniques for connecting wire ends in electric motors.
USEFUL FOR

This discussion is beneficial for hobbyists, educators, and anyone involved in electric motor repair or modification, particularly those working with older 6-12 volt generators.

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The armature of an electric motor, (the inside coils) are made from copper and have extremely low resistance. When you connect the motor to a voltage supply and supply some current to the motor, even though the resistance is low, the current may be as little as 2 or 3 Amps. Where does the resistance that limits the current come from?

I have no idea, but i believe it is an easy answer. I thought of power lines and them using high voltage instead of current so less heat is lost, but am stuck
 
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Look up back EMF or counter EMF.
 


Hi all, new to the forum, Need some information on what is called the (star) winding on the older 6-12 volt generators. WORKING ON A SCIENCE FAIR PROJECT WITH GRAND SON. To be exact need to know how to rewind them and how many wire ends are soldered to the commutator sections. Also if the other ends of the windings in the slot are all hooked together as in a neutral point. Any info would be much appreciated.Thanks.
 

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